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<center><h1>FreeType-2.4.12 API Reference</h1></center>

<center><h1>
The CFF driver
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<h2>Synopsis</h2>
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<tr><td></td><td><a href="#hinting-engine">hinting-engine</a></td><td></td><td><a href="#FT_CFF_HINTING_XXX">FT_CFF_HINTING_XXX</a></td><td></td><td><a href="#no-stem-darkening">no-stem-darkening</a></td></tr>
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<p>While FreeType's CFF driver doesn't expose API functions by itself, it is possible to control its behaviour with <a href="ft2-module_management.html#FT_Property_Set">FT_Property_Set</a> and <a href="ft2-module_management.html#FT_Property_Get">FT_Property_Get</a>. The following lists the available properties together with the necessary macros and structures.</p>
<p>The CFF driver's module name is &lsquo;cff&rsquo;.</p>
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<h4><a name="hinting-engine">hinting-engine</a></h4>
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<p>Thanks to Adobe, which contributed a new hinting (and parsing) engine, an application can select between &lsquo;freetype&rsquo; and &lsquo;adobe&rsquo;.</p>
<p>Right now, the default engine is &lsquo;freetype&rsquo;. However, this will change: After a certain time of intensive testing it is planned to make &lsquo;adobe&rsquo; the default due to its superior rendering results.</p>
<p>The following example code demonstrates how to select Adobe's hinting engine (omitting the error handling).</p>
<pre class="colored">
  FT_Library  library;
  FT_Face     face;
  FT_UInt     hinting_engine = FT_CFF_HINTING_ADOBE;


  FT_Init_FreeType( &amp;library );

  FT_Property_Set( library, "cff",
                            "hinting-engine", &amp;hinting_engine );
</pre>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>This property can be used with <a href="ft2-module_management.html#FT_Property_Get">FT_Property_Get</a> also.</p>
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<h4><a name="FT_CFF_HINTING_XXX">FT_CFF_HINTING_XXX</a></h4>
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Defined in FT_CFF_DRIVER_H (freetype/ftcffdrv.h).
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#define <a href="ft2-cff_driver.html#FT_CFF_HINTING_XXX">FT_CFF_HINTING_FREETYPE</a>  0
#define <a href="ft2-cff_driver.html#FT_CFF_HINTING_XXX">FT_CFF_HINTING_ADOBE</a>     1

</pre></table><br>
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<p>A list of constants used for the <a href="ft2-cff_driver.html#hinting-engine">hinting-engine</a> property to select the hinting engine for CFF fonts.</p>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>values</b></em></td></tr><tr><td>
<p></p>
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<tr valign=top><td colspan=0><b>FT_CFF_HINTING_FREETYPE</b></td></tr>
<tr valign=top><td></td><td>
<p>Use the old FreeType hinting engine.</p>
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<tr valign=top><td><b>FT_CFF_HINTING_ADOBE</b></td><td>
<p>Use the hinting engine contributed by Adobe.</p>
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<h4><a name="no-stem-darkening">no-stem-darkening</a></h4>
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<p>By default, the Adobe CFF engine darkens stems at smaller sizes, regardless of hinting, to enhance contrast. Setting this property, stem darkening gets switched off.</p>
<p>Note that stem darkening is never applied if <a href="ft2-base_interface.html#FT_LOAD_XXX">FT_LOAD_NO_SCALE</a> is set.</p>
<pre class="colored">
  FT_Library  library;
  FT_Face     face;
  FT_Bool     no_stem_darkening = TRUE;


  FT_Init_FreeType( &amp;library );

  FT_Property_Set( library, "cff",
                            "no-stem-darkening", &amp;no_stem_darkening );
</pre>
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<table align=center width="87%" cellpadding=5><tr bgcolor="#EEEEFF"><td><em><b>note</b></em></td></tr><tr><td>
<p>This property can be used with <a href="ft2-module_management.html#FT_Property_Get">FT_Property_Get</a> also.</p>
</td></tr></table>
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